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PANDUIT DPoE Power System User’s Guide Issue 1.0
Part Number: PN380
Short Circuit and Current Limit
I
Limit
can be adjusted up to +105% of the rated current of the rectifier (See Table 4: Recommended AC
Circuit Breaker and Wire Sizes). The system voltage will remain constant up to I
Limit
at which point the
system voltage will drop quickly toward 0 VDC
,
as shown in Figure 11: Short Circuit & Current Limit.
Once a rectifier output drops below 12 VDC for more than 5 seconds, the system will shut down. The
system will automatically restart after 60 seconds, and will continue until the short circuit is cleared.
I
Limit
Current
V
Shutdown
Rectifier Voltage
V
Rated
Figure 11: Short Circuit & Current Limit
Troubleshooting
The modular nature of this DPoE Power System makes diagnostics and repair easy. Make sure that all
rectifiers are properly seated and latched into their respective slots. Make sure all power and signal
connectors are properly mated.
Table 8: Troubleshooting
Alarm Problem Possible Solution
DC OK LED is extinguished This rectifier has stopped
outputting power
Rectifier failed. Replace this
unit.
AC OK and all LEDs are
extinguished
Commercial power has been
lost to the specified rectifier(s)
Reset commercial circuit
breaker to the dedicated AC
circuit that feeds the system.
Seek alternative power source
until power is restored.
Fuse Open A fuse is in the open state Replace the open fuse
NIC Information
The PANDUIT DPoE Power System Chassis can be ordered with or without the NIC card. (PANDUIT
part number DPoEPWRCM includes the NIC card. PANDUIT part number DPoEPWRCU does not). The
NIC card allows the DPoE Power System to communicate with the management system. If a chassis is
ordered and installed without a NIC card, it can be easily field upgraded to add the NIC card. Figure 8:
Chassis (Front View) - GMT fuse holder shows where the NIC card is plugged into the chassis.
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